Abstract
The lower town of the settlement of Castellas in Murviel-lès-Montpellier stretches out at the foot of the eponymous hill that gives the site its name. Stretched over 17 hectares (42 acres), the lower town surrounded by a fortification built in the first half of the 1st century BC and results from an extension of the original habitat located on the summit and slopes of Castellas’s hill. The excavation carried out between 2009 and 2017 uncovered part of the residential block as well as the roadway that borders it. It also made it possible to study a section of the nearby curtain wall and to reveal a new gate in the enclosure. The study of the evolution of this habitat over a century of occupation bring in détails the permanence and changes that affect the ways of living, outside the large urban centers, at the end of the late republican period and at the beginning of the High Empire.